stick out like a sore thumb
US /stɪk aʊt laɪk ə sɔr θʌm/
UK /stɪk aʊt laɪk ə sɔr θʌm/

1.
显得格格不入, 非常显眼
to be very noticeable in a way that is different or unusual from the surroundings
:
•
Her bright red dress made her stick out like a sore thumb at the conservative event.
她那件鲜红的裙子让她在保守的活动中显得格格不入。
•
The modern building will stick out like a sore thumb in the historic district.
这座现代建筑在历史街区中会显得格格不入。